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'settlement_prices' = closing/open/high/low + volume per ticker per day (์ผ๋ณ„ ์‹œ์„ธ). 'foreign_ownership' = foreign ownership ratio (์™ธ๊ตญ์ธ ๋ณด์œ ์œจ) per ticker. 'trading_volumes' = volume + value traded (๊ฑฐ๋ž˜๋Ÿ‰/๊ฑฐ๋ž˜๋Œ€๊ธˆ). 'market_cap_ranking' = top-N market-cap ranking. 'index_components' = index constituents with weights.", "default": "settlement_prices" }, "market": { "title": "Market segment", "enum": [ "KOSPI", "KOSDAQ", "KONEX", "all" ], "type": "string", "description": "Which KRX market to scan. 'KOSPI' = large-cap main board (์œ ๊ฐ€์ฆ๊ถŒ์‹œ์žฅ โ€” Samsung, SK Hynix, Hyundai). 'KOSDAQ' = mid/small-cap growth board (์ฝ”์Šค๋‹ฅ). 'KONEX' = small-cap KONEX board (์ฝ”๋„ฅ์Šค). 'all' = combined KOSPI + KOSDAQ + KONEX.", "default": "all" }, "date_from": { "title": "Date from (YYYY-MM-DD)", "type": "string", "description": "Earliest trading date to fetch. Defaults to 30 days ago. 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